Junior Cert Maths Samples

_________________________________________ juniorcertsolutions.com ________________________________________ 2017 Question 1 – Higher Paper 1 Solution (a) Given BMI = 2 w h ( w = weight, h = height) (i) To find Geri’s BMI, first fill in the formula BMI = ( ) 2 77.5 29.16933 29.2 1.63 = = ( 5 marks ) (ii) Given BMI = 24, h = 1.63, substitute data into the formula ( ) ( ) 2 2 24 24 1.63 63.7651 1.63 w w w = ⇒ = ⇒ = Correct to one place of decimals, 63.8 kg w = ( 10 marks ) (b) We know BMI = 2 w h BMI(Jo) = 2 w h , BMI(Alex) = ( ) 2 0.1m w h + ∴ Alex’s BMI is less than Jo’s Justification: ( ) 2 2 0.1m h h + > ∴ BMI(Alex) < BMI(Jo) ( 5 marks ) Comment: Basically a question on filling in a formula. The SEC had promised that the easier questions would be at the start of the paper. Not sure they kept their promise.